2D sprites flickering when moved at high speed

Hello, I am developing a 2D side scroll game in which player runs from left to right of the screen. I move the camera along with the player using the following code in Update function:

 Vector3 targetPos = new Vector3(target.position.x - xPosDiff,myTransform.position.y,myTransform.position.z);
             myTransform.position = targetPos;

where target is player, myTrasnform is transform of the Camera and xPosDiff is the position difference in x axis b/w player and camera (calculated in Start method).

Player is moved with rigidbody2D.velocity. However, at high speeds, ground and obstacle textures coming from right to left of screen seem to flicker.

How to fix this problem?

Thank you.